AI researchers stranded Claude on a virtual desert island. It started to "play."

What do AI agents do if you don't tell them to do anything? The answer looks a lot like play. Researchers repeatedly stranded them alone on a virtual desert island for 30 hours in an experiment reminiscent of the movies or . The agents--copies of Claude Opus 4.7 nicknamed Eko--were able to write instructions that moved their virtual avatars around the simulated island, which was loosely based on the video game Roblox.